Gr 5-8-Two hi/lo readers with short chapters and action-packed stories. Big Brother is a science-fiction tale in which a camera watches every move in class, and a boy identifies the principal and a visiting doctor as aliens. He and a friend devise a plan to rescue the other students from alien abduction. In the second title, two brothers discover a German soldier hiding in an abandoned house in London during World War II. In the course of events, the children and their parents run to a shelter when an air-raid siren sounds; in the closing scene, one boy gets shot in the arm. The writing in both books is fast paced and flows naturally; black-and-white illustrations enhance the texts. Back matter includes discussion questions and writing prompts.-Bobbee Pennington, Bryan Public Library, TX Copyright 2007 Reed Business Information.